Submitted on: 24 September 2019.
Revised on: 07 November 2019.
Accepted on: 27 December 2019.
___________________Journal fur Mathematik-Didaktik
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Submitted on: 27 March 2023.
Revised on: 08 July 2023.
Accepted on: 24 August 2023.
___________________Journal fur Mathematik-Didaktik
Submitted on: 01 August 2022.
Revised on: 12 November 2022.
Accepted on: 28 November 2022.
___________________Journal fur Mathematik-Didaktik
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